Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
24 Cards in this Set
- Front
- Back
What 3 things are needed to give you testis?
|
1. Testosterone
2. MIF 3. Sry gene encoding TDF (Testis determining factor) |
|
List the events taking place in Meiosis I:
|
1. Pairing of 46 homo chromes
2. Crossing over 3. Disjunction: w/o centromere splitting |
|
Meiosis I causes a:
|
Reduce in number
46--> 23 |
|
Meiosis II causes a:
|
Reduce in ploidy
2N --> 1N |
|
List the events taking place in Meiosis:
|
Disjunction WITH centromere splitting
|
|
What stage is an egg in if a patient ovulates but the egg is not fertilized:
|
Secondary oocyte did nto complete meiosis II
|
|
All primary oocytes are formed by 5 months and are stored in what form until puberty?
|
Meiosis I prophase
|
|
Secondary oocytes are arrested in what state after puberty?
|
Meiosis II Metaphase
|
|
Fertilization of a secondary oocyte means it has?
|
Completed Meiosis II to form a mature oocyte and polar body
|
|
A blastocyst splits into:
|
Embryoblast and Trophoblast
|
|
Trophoblasts split into:
|
Cytotrophoblast and Syncitiotrophoblast
Embryoblast becomes the embryo |
|
Blastocyst is characterized by a:
|
Fluid filled cavity
|
|
Embryoblast becomes:
Trophoblast becomes: |
Embryo
Placenta |
|
What layer must degenerate for implantation to occur?
|
Zona pellucida
|
|
The blastocyst implants in the functional layer of the endometrium during what phase of the cyle?
|
Progestational phase
|
|
Embryoblast splits into:
|
Epiblast and Hypoblast
|
|
Mitosis takes place in what division of the trophoblast?
|
Cyto
|
|
What division of the trophoblast makes HCG?
|
Syncytio
|
|
The future mouth starts as:
|
Prochordal plate
|
|
Zygote:
Embryo: Fetus: |
1-2 wks
3-8 wks Rest |
|
The first missed menstrual period signifies what week of embryonic development?
|
Week 3
|
|
What is a chordoma?
|
Tumor of the remnants of the notochord found in the sacral region
|
|
List derivatives from the Neural Crest:
|
AM
Ganglia Schwann Cells Meninges Pharyngeal arch cartilage |
|
List derivatives from the Neuroectoderm:
|
All neurons
Retina Neurohypophysis Astrocytes Oligodendrocytes |